Alan Thicke’s widow has scored a small victory in her legal battle with stepsons Robin and Brennan over the late actor/singer’s estate.

Singer Robin Thicke and his brother Brennan went to war with their stepmother Tanya Callau in May, seeking to ban her from challenging the terms of the pre-nuptial agreement she signed with Alan four days before their wedding in 2005.

The siblings claimed the actress/model, aka Tanya Thicke, had threatened to go public with family secrets if she didn’t receive a bigger cut of the Growing Pains star’s estate, but she denied the allegations, making it clear she has no intention of challenging the pre-nup and only wants what is rightfully hers.

Alan’s will entitled her to 25% of his personal effects, a $500,000 life insurance policy, and permission to live at his Carpinteria, California ranch as long as she agreed to maintain the property.

The judge overseeing the family dispute has since sided with Tanya, dismissing the Thicke brothers’ petition, ruling there is no evidence to suggest their stepmother is planning to sue over Alan’s will.

However, according to TMZ.com, Robin and Brennan have been given the option of filing a new claim against Tanya, as long as they provide “more specifics” to back up their argument.

At the time of the Thicke siblings’ initial court filing, Tanya’s attorney Adam Streisand insisted she was being unfairly targeted in a phony legal bid.

“Tanya Thicke has never threatened to take private family matters public and she never has,” he told the New York Post’s Page Six in May. “It is clear that Alan’s sons have chosen this distasteful public smear tactic to bully Tanya, by stirring up the tabloid media, filing a bogus lawsuit, and refusing family mediation.

“Tanya is still grieving the death of her beloved husband and out of respect for Alan’s memory intends to handle his sons’ false statements privately.”

TV icon Alan died in December, aged 69, after suffering a heart attack while playing ice hockey with his adult son Carter.